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clk: sunxi: Add a common setup function for mmc module clocks

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The only difference between module clocks on different platforms is the
width of the mux register bits and the valid values, which are passed in
through struct factors_data. The phase clocks parts are identical.

This patch generalizes the setup function, so most of the code can be
reused when adding sun9i support, which has a wider mux register.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This commit is contained in:
Chen-Yu Tsai 2015-01-13 09:37:23 +08:00 committed by Maxime Ripard
parent a7d19057e7
commit eb378df79e
1 changed files with 19 additions and 7 deletions
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26
drivers/clk/sunxi/clk-mod0.c
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@ -272,9 +272,16 @@ static const struct clk_ops mmc_clk_ops = {
.set_phase = mmc_set_phase,
};
static DEFINE_SPINLOCK(sun4i_a10_mmc_lock);
static void __init sun4i_a10_mmc_setup(struct device_node *node)
/*
* sunxi_mmc_setup - Common setup function for mmc module clocks
*
* The only difference between module clocks on different platforms is the
* width of the mux register bits and the valid values, which are passed in
* through struct factors_data. The phase clocks parts are identical.
*/
static void __init sunxi_mmc_setup(struct device_node *node,
const struct factors_data *data,
spinlock_t *lock)
{
struct clk_onecell_data *clk_data;
const char *parent;
@ -296,9 +303,7 @@ static void __init sun4i_a10_mmc_setup(struct device_node *node)
goto err_free_data;
clk_data->clk_num = 3;
clk_data->clks[0] = sunxi_factors_register(node,
&sun4i_a10_mod0_data,
&sun4i_a10_mmc_lock, reg);
clk_data->clks[0] = sunxi_factors_register(node, data, lock, reg);
if (!clk_data->clks[0])
goto err_free_clks;
@ -318,7 +323,7 @@ static void __init sun4i_a10_mmc_setup(struct device_node *node)
phase->hw.init = &init;
phase->reg = reg;
phase->lock = &sun4i_a10_mmc_lock;
phase->lock = lock;
if (i == 1)
phase->offset = 8;
@ -345,4 +350,11 @@ err_free_clks:
err_free_data:
kfree(clk_data);
}
static DEFINE_SPINLOCK(sun4i_a10_mmc_lock);
static void __init sun4i_a10_mmc_setup(struct device_node *node)
{
sunxi_mmc_setup(node, &sun4i_a10_mod0_data, &sun4i_a10_mmc_lock);
}
CLK_OF_DECLARE(sun4i_a10_mmc, "allwinner,sun4i-a10-mmc-clk", sun4i_a10_mmc_setup);